Magneforming

C-17 pushrods with tubes magneformed onto end fittings

C-17 pushrods with tubes magneformed onto end fittings

The Magneforming process utilizes an electronic current to generate a pulsed magnetic field; controllable pressure is generated allowing electrically conductive metal parts to be formed together.

Electrical current stored in banks of capacitors is discharged through a forming coil often made of copper. The rapidly changing magnetic field induces a current to flow into the work piece which then produces an opposing magnetic field. Within milliseconds the work piece is reshaped, compressing the diameter around the mating part to be formed.

An additional type of magneforming called explosive forming uses solid copper wire shaped in a coil that surrounds the parts to be formed together. The coil “explodes” thereby forming the two parts together. This type of magneforming is best suited on thicker walled materials such as aircraft pushrods, but can also form dissimilar materials together.

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